QT1100连续油管钢的抗液固两相流冲蚀性能  

Erosion Resistance of QT1100 Coiled Tubing Steel in Liquid-Solid Two-Phase Flow

作　　者：崔璐[1,2] 杨栩卿 李佳望 李明峰 常文权 程嘉瑞[1,2] CUI Lu;YANG Xuqing;LI Jiawang;LI Mingfeng;CHANG Wenquan;CHENG Jiarui(Xi'an Key Laboratory of Wellbore Integrity Evaluation,Xi'an Shiyou University,Xi'an 710065,China;School of Mechanical Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学西安市高难度复杂油气井完整性评价重点实验室,西安710065 [2]西安石油大学机械工程学院,西安710065

出　　处：《机械工程材料》2024年第11期55-60,共6页Materials For Mechanical Engineering

基　　金：陕西省自然科学基金资助项目(2023-JC-YB-376);西安石油大学青年创新团队基金资助项目(2019QNKYCXTD10);西安石油大学研究生创新与实践能力培养计划项目(YCS22214269)。

摘　　要：采用含砂粒清水混合液(携砂液)对QT1100连续油管钢进行液固两相流冲蚀试验,研究了携砂液冲刷角度(15°,30°,45°,60°,75°,90°)、冲刷速度(2.4,7.2,12.0,16.9 m·s^(−1))、砂质量浓度(15,30,45,60,75 kg·m^(−3))、砂类型(尖角形天然石英砂、近圆形人工陶粒砂)和砂粒径(0.063~0.420 mm)对试验钢抗冲蚀性能的影响,分析了冲蚀损伤机理。结果表明:在试验参数下冲蚀后,试验钢均主要发生机械冲刷磨损,损伤机理均包括微切削和冲击挤压,其中小角度冲刷以微切削为主,大角度冲刷以冲击挤压为主。试验钢的冲蚀速率随着冲刷角度或砂粒径的增大先增大后减小,在45°冲刷角度或者0.15~0.18 mm粒径天然石英砂条件下试验钢的冲蚀损伤最大;冲蚀速率随着冲刷速度增大而增大,随着砂质量浓度增加先增大,当砂质量浓度为60 kg·m^(−3)时减小,随后快速增大;相较于近圆形人工陶粒砂,尖角形天然石英砂的冲蚀速率更大,对试验钢的冲蚀磨损更严重。The liquid-solid two-phase flow erosion test was conducted on QT1100 coiled tubing steel by sandwater mixture(carrying liquid).The effects of scouring angle(15°,30°,45°,60°,75°,90°),scouring speed(2.4,7.2,12.0,16.9 m·s^(−1)),sand mass concentration(15,30,45,60,75 kg·m^(−3)),sand type(sharp angular natural quartz sand and round artificial ceramsite sand),and sand particle size(0.063‒0.420 mm)of carrying liquid on the erosion resistance of the test steel were studied,and the damage mechanism was analyzed.The results show that after erosion with the test parameters,the mainly damage mechanism for the test steel was mechanical erosion wear,involving micro-cutting and impact extrusion.Micro-cutting was the main mechanism for small-angle scouring,while impact extrusion dominated for large-angle scouring.The erosion rate of the test steel increased first and then decreased with increasing scouring angle or sand particle size,and the maximum erosion damage occurred under conditions at 45°scouring angle or with 0.150‒0.180 mm particle size of natural quartz sand.The erosion rate increased with increasing scouring speed,and increased first with increasing sand mass concentration,decreased when the sand mass concentration reached 60 kg·m^(−3) and then rapidly increased.The erosion rate and erosion wear with sharp angular natural quartz sand were greater than those with round artificial ceramsite sand.

关 键 词：QT1100连续油管钢 冲蚀速率 冲蚀损伤 液固两相流冲蚀 

分 类 号：TE983[石油与天然气工程—石油机械设备]